DE3032545C2 - Process for regenerating layers of brick flour, in particular covering layers on sports fields - Google Patents

Description

Embodiment

A tennis court whose water permeability is within had gone back so far from three months that after an hour no longer, as in the beginning, but was only playable after five to six hours, is by spraying with an aqueous solution of 2% concentrated nitric acid with 51 per square meter Treated After two hours, the sports field is sprayed with pure water. After a short time it is it is playable again.

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Claims (6)

1 2 take. Claims: - The invention is based on the object of providing a simple and inexpensive way to implement 1. Procedure for regenerating brick dust - regeneration of the water permeability of sail layers, in particular from top layers to 5 flour layersa, in particular from top layers Sports fields, characterized in that they create sports fields. that an acid is applied to the brick dust layer. The object is achieved according to the invention gen will. in the fact that an acid is deposited on the 2. The method according to claim 1, characterized in that. This acid attacks calcium carbonate that the acid fertilize in the form of an aqueous solution that makes it impermeable to water solution is applied. and is therefore able to restore water permeability 3. The method according to claim 2, characterized thereby producing. draws that nitric acid is used as the acid. The invention utilizes the knowledge that the the decreasing water permeability is due to 4. The method according to claim 3, characterized in that 15 ren is that by the watering and the precipitation shows that the concentration of nitric acid in calcium compounds dissolved out of the top layer of the aqueous solution is 0.1 to 5%, preference will be given that can originate from the brick dust wise 2%. or gets into the top layer in some other way 5. The method according to any one of claims 2 to 4, and which can be under the influence of the low thereby characterized that 3-151 of the aqueous CC> 2 gas taken up 20 strokes is water-impermeable Calcium carbonate compounds form per square meter on the top layer, which are in to be brought. the toothed area between the top layer 6. The method according to any one of claims 2 to 5, and the underlying layer increasingly accumulate characterized in that the aqueous solution and especially here the water drainage possibilities are far-fungicides contains 25 hend prevent. This transition point between top layer and layer below is due to the inclusion of the fine pieces of brick dust between the coarser parts, it is worse than in one pure brick flour layer or in a layer of pure The invention relates to a method for regenerating coarser material, especially at this bottleneck Ren of brick dust layers, in particular of the top and lower end of the top layer, is formed by calcium layers on sports fields. Umcarbonatverbindungen a water-impermeable seal flour layers are used as top layers. This impermeable layer will not go away Used on tennis courts These top layers are cleared when the deck chairs on tennis courts in spring on layers of coarser material, usually layer in its upper part is renewed. This Verten from slag. After building the different serration area between the top layer and the Layers is the top layer by repeated underlying layer but is also used with material rolling and watering condenses until one is not taken into account for the examinations, because there is one here Sports favorable strength with a good water mix of two materials is available straight This water permeability is necessary, but this lowest area of the top layer is what dig to keep precipitation down into the ground which requires regeneration. to ooze. Such sports fields are then. In the invention, it is essential that these are maintained under constant care, with the rolling operations also being carried out in the area of the cover layer or the toothing be- and watering can be repeated. rich between the top layer and the underlying After one or more months, such a layer will be regenerated. The top layer becomes increasingly impermeable to water, without the acid becoming appropriately expedient the material itself is subject to significant changes in a further development of the process in the form of a wäßrimerkbar are. Investigations of the top layer and the gene solution applied. That is by simply being concerned Shift regularly reveal that the blow up is possible. Conditions set by the standards for these 50 are advantageously used according to further layers are met. The disadvantage of the diminishing design as acid is nitric acid. This can be serious in the water permeability. During a sports field newly laid out with an aqueous solution concentration of 0.1-5% being applied after heavy rain. The use of nitric cleaners can already be used after one hour, is particularly useful for older people, because this means that there are no more places or water after this hour, so that these 55 world impurities occur. Because spaces are only formed after a few more hours of play. Strangely enough, it turns out that those aqueous nitric acid solutions that are slightly deeper than neighboring areas are of calcium nitrate, a substance that is found in the farmer and on which the water therefore stands a little longer used as fertilizer,
become particularly impermeable to water. eo Since a remedy for the regeneration of the brick meal has hitherto been possible by producing a fertilizer, it can be useful to remove the top two or more layers and add fungicides to the solution, which replaced the improved layers with new ones. The removal of the upper growth conditions with regard to the most undesirable layer alone, as it regularly counteracts in the spring with plants. The fungicides are usually used on tennis courts and do not improve the water permeability, expediently only after dilution. This substitution sets
multiple layers is complex and expensive. Such a repair is largely the DE-PS 8 03 544 to